Please help! How much of the good stuff do you flush?

I have done a few Liver Flushes and usually get great results but the last 2 have left me wiped out!! I will be fine for a few days after the Liver Flush but then I get so tired and almost can't function. It's as if I can't get enough sleep and I'm very irritable.
My question is could it be that I flushed out some vitamins, minerals or hormones that I need? My hormones are usually low so I wonder if I flushed out too much? I'm usually a little low in iron too? Could I flushed that out?
Please help!! I'm exhausted?!!!